import java.util.HashMap;
import java.util.Map;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * Date: 2024-02-12
 * Time:21:06
 */
public class Test {
    public static void main(String[] args) {
        Map<Integer,Integer> map = new HashMap<>();
        map.put(2,1);
        map.put(2,3);
        System.out.println(map.get(2));
    }
}
